TB 9-4935-558-50-1
SECTION I
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
1. Test Instrument Identification.
calibration of hold back test fixture 10682724 and 1045515. Drawing 10682724 was used
as the prime data source in compiling these instructions. The hold back test fixture will be
referred to as the TI (test instrument) throughout this bulletin.
a. Model Variations. Variations among models are described in text.
b. Time and Technique. The time required for this calibration is approximately one
hour, using the physical technique.
2. Calibration Data Card (DA Form 2416).
a.
Forms, records and
reports required for calibration personnel at all
levels are
prescribed by TM 38-750. DA Form 2416 must be annotated in accordance with TM 38-750
for each calibration performed.
b. Adjustments to be reported on DA Form 2416 are designated (R) at the end of the
sentence in which they appear. When adjustments are in tables, the (R) will follow the
designated adjustment. Report only those adjustments made and designated with (R).
Test instrument parameters
and
performance
,
3. Calibration Description.
specifications which pertain to this calibration are listed in table 1.
Table 1. Calibration Description
Test instrument parameters
Performance specifications
Force dimension and load
Dimension between end of slider and bottom of dowel pins with
95 lbs. force applied shall be 2.1515 .001 in.
SECTION II
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 2
identifies the
specific equipment used in
this
calibration procedure. This equipment is issued with secondary transfer calibration
standards set and is to be used in performing this procedure. Alternate items may be used
by the calibrating activity when the equipment listed in table 2 is not available. The items
selected must be verified to perform satisfactorily prior to use and must bear evidence of
current calibration. The equipment must meet or exceed the minimum use specifications
listed in table 2. The accuracies listed in table 2 provide a four-to-one accuracy ratio
between the standard and test instrument. Where the four-to-one ratio cannot be met, the
actual accuracy of the equipment selected is shown in parenthesis.
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